E$6-6($Algo$)$ Identifying Break$-$Even Point, Analyzing How Price Changes Affect Profitability; Calculating Margin of Safety, Target Profit $[$LO $6-1,6-2,6-3,6-4]$

Sandy Bank, Incorporated, makes one model of wooden canoe. And, the information for it follows:

$\backslash$table$[[$Number of canoes produced and sold,$550,750,900],[\backslash$table$[[$Total costs$],[$Variable costs$]],,,],[,$$$104,500,$$$142,500,$$$171,000$